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Ink jet ink, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus

a recording method and ink jet technology, applied in the field of ink jet recording apparatus, ink jet recording method, etc., can solve the problems of clogging of ink at the ejection port of the recording head, the speed of the image obtained herein does not reach the level recently demanded, and the ejection stability of intermittent ejection is not good, so as to achieve excellent sticking resistance and excellent lightfastness. , the effect of excellent stability

Active Publication Date: 2009-09-24
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011]Accordingly, an object of the present invention is to provide ink jet ink, which forms an image (recorded by the ink) having excellent lightfastness and which has excellent sticking resistance and intermittent ejection stability. Another object of the present invention is to provide ink jet ink having excellent recording durability even if the ink is applied to an ink jet recording system in which ink is ejected by the action of thermal energy, and having a color tone that can be used as magenta ink. Another object of the present invention is to provide an ink jet recording method, an ink cartridge, a recording unit, and an ink jet recording apparatus capable of stably providing an image having excellent lightfastness and high storage stability by use of the ink jet ink.
[0017]According to the present invention, it is possible to provide ink jet ink which forms an image having excellent lightfastness and which has excellent sticking resistance and intermittent ejection stability. Furthermore, according to another aspect of the present invention, it is possible to provide ink jet ink having excellent recording durability even if the ink is applied to an ink jet recording system in which ink is ejected by the action of thermal energy, and having the color tone that can be used as magenta ink. As another embodiment of the present invention, it is possible to provide an ink jet recording method, an ink cartridge, a recording unit, and an ink jet recording apparatus using the ink jet ink.

Problems solved by technology

However, it was found that the fastness properties of the image obtained herein did not reach the level recently demanded.
However, it was found that the use of such a compound and the magenta dye in combination raises new problems described below.
First, it was found that clogging of ink occurs at the ejection port of a recording head; in other words, sticking resistance of ink is insufficient.
In addition to this problem, when an ink jet recording apparatus is allowed to stand still without ejecting ink for a predetermined time, moisture vaporizes from ink through an ejection port.
As a result, ink is not normally ejected, in other words, an intermittent ejection stability of ink is not sufficiently obtained.

Method used

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examples

[0179]The present invention will now be described in detail below with reference to examples and comparative examples. The present invention is not limited by the following examples as long as the present invention does not go beyond the scope of the invention. Note that, unless otherwise specified, the units of ink components of Examples and Comparative examples are “parts by mass”. Furthermore, the term “parts” and the symbol “%” in the description below are on the basis of mass, unless otherwise specified.

[0180]

[0181](Synthesis of Compound I-46)

[0182]As the compound I-46, a dye (lithium salt) synthesized according to Example 1 of Japanese Patent Application Laid-Open No. 2006-143989 was used.

[0183](Synthesis of compound III-1)

[0184](A) To xylene (360 parts), a compound (94.8 parts) of the following formula (1), sodium carbonate (3.0 parts) and ethyl benzoyl acetate (144.0 parts) were sequentially added while stirring. A reaction was performed for eight hours by increasing the tem...

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Abstract

An ink jet ink providing an image having excellent lightfastness and having sticking resistance and intermittent ejection stability. The ink jet ink is characterized by containing at least a compound represented by the following general formula (I) and a compound represented by the following general formula (II).

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an ink jet ink, an ink jet recording method, an ink cartridge, a recording unit and an ink jet recording apparatus.[0003]2. Description of the Related Art[0004]The ink jet recording method is a recording method for forming an image by applying small ink droplets onto recording mediums such as plain paper and glossy medium. Because of cost reduction and improvement of recording speed, the ink jet recording method has been quickly and widely used. Furthermore, the quality of the images obtained by the ink jet recording method has been improved and, in addition, digital cameras have been rapidly put in use. Accordingly, the ink jet recording method is generally and widely used as a method of outputting an image corresponding to silver halide photography.[0005]Recently, the size of ink droplets ejected by an ink jet system has been reduced extremely small and a color range has been improved ...

Claims

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Application Information

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IPC IPC(8): B05D5/06C09D11/02B41J2/01B41M5/00C09B5/14C09B29/42C09B67/22C09D11/00C09D11/328
CPCC09D11/328
Inventor YAMAKAMI, HIDEKITOMIOKA, HIROSHIOKAMURA, DAIJIISHII, MITSURUKUDO, SATOSHIMORI, OTOME
Owner CANON KK
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